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Asteroids with Satellites Database--Johnston's Archive
1999 RT214
compiled by Wm. Robert Johnston
last updated27 May 2019--Orbital and physical data--
(Seethis page for definitions of quantities; source codes in brackets, seethis link for full references; *A, *D, and *E indicate assumed, derived, and estimated values, respectively.)
dynamical type, primary:TNO, Cubewano
orbital data, primary (osculating elements)[JPL]: | semimajor axisa: | 42.6472 AU | | orbital periodP: | 278.507 yr
(= 101726.6 d) | | eccentricitye: | 0.04889 | | perihelion distanceq: | 40.5621 AU | | aphelion distanceQ: | 44.7323 AU | | inclinationi: | 2.57607° | | argument of perihelionω: | 204.9861° | | ascending nodeΩ: | 138.0501° | | mean anomalyM: | 2.867° | | perihelion passageTP: | 2017 Feb 05.9 | | Epoch: | 2019 Apr 27 | | data arc: | 1999-2008(44 obs.) | | Earth MOID: | 39.5537 AU | | Jupiter Tisserand invariantTJ: | 5.835 | | Neptune Tisserand invariantTN: | 3.082 [*D] |
orbital data, secondary: | semimajor axisas: | 3396± 66 km[G19b] | | separation/primary radiusas/rp: | 104 [*D] | | separation/Hill radiusas/rH: | 0.018 [*D] | | orbital periodPs: | 126.504± 0.046d [G19b] | | eccentricityes: | 0.298± 0.026[G19b] | | inclinationis: | 37.5° ± 1.2° [G19b] | | ascending nodeΩs: | 40.1° ± 2.1° [G19b] | | argument of pericenterωs: | 156.8° ± 1.9° [G19b] | | mean anomalyM: | 125.7° ± 1.9° [G19b] | | Epoch: | 2014 Dec 08.5 | | normalized ang. mom.αL: | ? |
| other data, system (combined):| absolute mag.H: | 7.8[MPC] | | slope parameterG: | (0.15) [*A] | | effective diameterdE: | 79 km [*E] | | geometric albedo: | (0.09) [*A] | | color indexU-B: | ? | | color indexB-V: | ? | | taxonomic type: | ? | | massm: | 1.94x1017 ± 1.1x1016kg [G19b] | | densityρ: | (1 g/cm3) [*A] | | Hill radiusrH: | 190000 km [*E] |
other data, primary: | diameterdp: | 65 km [*E] | | rotation periodRPp: | ? | | amplitude in mag., rotationalΔM: | ? | | pole directionΒ, λ: | ?,? |
other data, secondary: | diameterds: | 45km [*E] | | diameter ratiods/dp: | 0.689± 0.029 [N08c] | | component mag. differenceΔM: | 0.8 [N06b] | | rotation periodRPs: | ? | |
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-- 1999 RT214 --discovery and notes:
Primary discovered1999 Sep 06from Mauna Kea Observatory, Hawaii, USAby C. A. Trujillo, J. X. Luu, and D. C. Jewitt.
Companion discovered2006 Jul 25 by K. S. Noll, W. M. Grundy, H. F. Levison, and D. C. StephensusingHubble Space Telescope observations from Hubble Space Telescope.Announced2006 Sep 29 [N06b].
--Links, more technical:
--Links, less technical:
--Links to ADS abstracts:
- Noll, K. S., Grundy, W. M., Levison, H. F., & Stephens, D. C. 2006, International Astronomical Union Circular1999 RT_214
©2006-2014, 2019by Wm. Robert Johnston.
Last modified27 May 2019.Return toHome. Return toAstronomy and Space. Return toAsteroids with Satellites.
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